Double bottom

A double bottom is a shiphull design and construction method where the bottom of the ship has two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is somewhat higher in the ship, perhaps a few feet, which forms a redundant barrier to seawater in case the outer hull is damaged and leaks.

The space in between the two bottoms is often used as storage tanks for fuel or ballast water, though fuel storage in the double bottom is not allowed for newbuilt ships since 2007, due to MARPOL 73/78.

Double bottoms are significantly safer than single bottoms. In case of grounding or other underwater damage, most of the time the damage is limited to flooding the bottom compartment, and the main occupied areas of the ship remain intact.
For this reason, double bottoms have been required in all passenger ships for decades as part of the Safety Of Life At Sea or SOLAS Convention.

An even more extensive protection is available as a double hull, where the second hull layer extends up the sides of the ship as well as in the bottom.

Double bottom

A double bottom is a shiphull design and construction method where the bottom of the ship has two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is somewhat higher in the ship, perhaps a few feet, which forms a redundant barrier to seawater in case the outer hull is damaged and leaks.

The space in between the two bottoms is often used as storage tanks for fuel or ballast water, though fuel storage in the double bottom is not allowed for newbuilt ships since 2007, due to MARPOL 73/78.

Double bottoms are significantly safer than single bottoms. In case of grounding or other underwater damage, most of the time the damage is limited to flooding the bottom compartment, and the main occupied areas of the ship remain intact.
For this reason, double bottoms have been required in all passenger ships for decades as part of the Safety Of Life At Sea or SOLAS Convention.

An even more extensive protection is available as a double hull, where the second hull layer extends up the sides of the ship as well as in the bottom.

Castellanos singled in the first, doubled and scored in the fourth, hit an RBIdouble in the fifth and hit a two-run home run off Jeanmar Gomez (0-1) in the seventh ...Engel led off the inning with a double, ... Jeimer Candelario's sacrifice fly made it 3-1 in the bottom of the third, and Victor Martinez's RBI double in the fourth scored Castellanos....

Castellanos singled in the first, doubled and scored in the fourth, hit an RBIdouble in the fifth and hit a two-run home run off Jeanmar Gomez (0-1) in the seventh ...Engel led off the inning with a double, ... Jeimer Candelario's sacrifice fly made it 3-1 in the bottom of the third, and Victor Martinez's RBI double in the fourth scored Castellanos....

Castellanos singled in the first, doubled and scored in the fourth, hit an RBIdouble in the fifth and hit a two-run home run off Jeanmar Gomez (0-1) in the seventh ...Engel led off the inning with a double, ... Jeimer Candelario's sacrifice fly made it 3-1 in the bottom of the third, and Victor Martinez's RBI double in the fourth scored Castellanos....

Castellanos singled in the first, doubled and scored in the fourth, hit an RBIdouble in the fifth and hit a two-run home run off Jeanmar Gomez in the seventh ... Jeimer Candelario's sacrifice fly made it 3-1 in the bottom of the third, and Victor Martinez's RBI double in the fourth scored Castellanos ... After loading the bases with no one out, Jose Iglesias hit into a double play to make it 3-3, and Castellanos followed with an RBI double....

Johnson City (22-27) got all the runs it needed when Zach Jackson stroked a three-run double to right field in the bottom of the second inning ...Jackson’s double — his 11th of the season — came next, giving the Redbirds a 3-0 advantage ... The bottom of the fifth unfolded with Moises Castillo ......

Mental mistakes cost Locust Grove as the Lady Mustangs unloaded in the bottom of the first inning for six runs on just three hits ... A double by EmmaGill made it 2-0. Bailie Runner followed with a double to score Gill ... Anderson went 5-for-5 with a home run, three doubles, five RBIs and three runs scored ... Anderson opened the scoring with an RBI-double in the first ... A Jones RBI-double in the fourth made it 6-3....

SHS Ryleigh Clinton recorded two RBIs and LanaGass stole home plate to record three runs for the LadyIndians in the bottom of the first. However, the Lady Indians quickly took control of the game in the bottom of the second inning. After allowing no runs in the top of the frame, the Lady Indians scored six runs in the bottom of the frame to take a 9-2 run....

, (AP) -- Roddery Munoz got Imanol Vargas to hit into a double play in the sixth inning, leading the DSL Braves to a 3-2 win over the DSL DodgersRobinson on Monday. The double play came with runners on ... After leading off the inning with a double, Jimmie Feliz scored on a groundout....

In the bottom of the fourth inning, Dodgers pitcher Clayton Kershaw looped a double into shallow left field that sent Crawford and Hern�ndez racing toward the line ... replaced by Alen Hanson in the field in the bottom of the frame....

While pursuing a Kershaw RBIdouble in the bottom of the fourth inning Monday, Crawford's head crashed into Hernandez's left knee on a play that sent members of the Giants' training staff racing toward shallow left field. Crawford initially stayed in the game to hit, but he was replaced by infielder Alen Hanson in the bottom of the fifth....

Castellanos singled in the first, doubled and scored in the fourth, hit an RBIdouble in the fifth and hit a two-run home run off Jeanmar Gomez in the seventh ... Jeimer Candelario's sacrifice fly made it 3-1 in the bottom of the third, and Victor Martinez's RBI double in the fourth scored Castellanos ... After loading the bases with no one out, Jose Iglesias hit into a double play to make it 3-3, and Castellanos followed with an RBI double....